School kids help monitor invasive fish species

Invasive fish species pose a significant threat to aquaculture, fisheries, the sport fishing industry, water resources, and the environment. Invasive fish are potentially damaging to economically important aquatic ecosystems, interfering with aquatic food webs, community composition, and ecological balance. Invasive fish also contribute to the decline or loss of economically and environmentally important native fish species through predation, consumption of eggs and fry, competition for food and breeding grounds, and introduction and spread of pathogenic microbes, parasites, and viruses. Development of a successful invasive fish species management plan is fundamental to helping to ensure a robust aquaculture industry, healthy fresh water fisheries, and a thriving sport fishing industry. Successful control of invasive fish requires an effective and economical monitoring system for widespread early detection, to guide management so early infestations can be controlled and limited before they become established.

We have developed an efficient citizen science-based mechanism for widespread early detection and monitoring of invasive fish. Water samples collected by student citizen scientists acrossthe state are analyzed for environmental DNA (eDNA) from several invasive fish species. We have createdeasily used collection kits containing everything needed for aquatic eDNA sampling. Using a simple online request system, teachers can reserve kits that provide site identification forms, detailed directions for eDNA sampling, and curriculum materials with background information about the ecological and economic problems associated with invasive fish and the importance of preventing their spread. eDNA samples are analyzed at Cornell University, and results are displayed on interactive Google maps on our website. A summary of the eDNA analysis and test results are returned to the classroom to facilitate learning and further discussion of invasive fish related issues.